Adapted from the anime series "Aoki Hagane no Arpeggio" and is the sequel to the film "Aoki Hagane no Arpeggio: Ars Nova", the story follows Gunzo Chihaya and his friends who are heading to America to present blueprints for a weapon that will change the tides of war. However, Gunzo and the rest of Arpeggio`s crew have attracted the attention of the mysterious Admirality Code and must now face a new Fleet of Fog threat known as "Fog Student Council," who are mental models dressed like high school girls.